---
title: "CVE-2026-50551: SiYuan: Stored XSS to RCE via Unsanitized Attribute View Asset Cell Content"
url: https://erroneo.us/security/cve/CVE-2026-50551/
description: "CVE-2026-50551 (github.com/siyuan-note/siyuan/kernel (Go)): SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, SiYuan contains a…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-06-24
date_modified: 2026-07-10
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-50551"
kev: false
cvss: 9.9
epss: 0.00776
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-50551: SiYuan: Stored XSS to RCE via Unsanitized Attribute View Asset Cell Content

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.8% , percentile 55: FIRST’s model estimates a 0.8% chance of exploitation activity in the next 30 days, higher than 55% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.
- Only applies if your dependency tree includes github.com/siyuan-note/siyuan/kernel (Go) < 0.0.0-20260628153353-2d5d72223df4, fixed in 0.0.0-20260628153353-2d5d72223df4 . Check your lockfile, including transitive dependencies.

## What it is

SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, SiYuan contains a stored cross-site scripting (XSS) vulnerability in the Attribute View (database) asset cell renderer that escalates to remote code execution (RCE) in the Electron desktop client. This vulnerability is fixed in 3.7.0.

## Affected packages

- Go `github.com/siyuan-note/siyuan/kernel` < 0.0.0-20260628153353-2d5d72223df4 → fixed: 0.0.0-20260628153353-2d5d72223df4

## Affected products (CVE record)

- siyuan-note siyuan: < 3.7.0

## Severity

- GitHub_M CVSS 3.1: 9.9 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.9 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.78% probability of exploitation activity in the next 30 days; percentile 55.

## Sources

- [GitHub Advisory GHSA-56mp-4f3v-fgj2](https://github.com/advisories/GHSA-56mp-4f3v-fgj2)
- [CVE.org record CVE-2026-50551](https://www.cve.org/CVERecord?id=CVE-2026-50551)
- [NVD entry CVE-2026-50551](https://nvd.nist.gov/vuln/detail/CVE-2026-50551)
- [github.com](https://github.com/siyuan-note/siyuan/security/advisories/GHSA-56mp-4f3v-fgj2)

---
Source page: https://erroneo.us/security/cve/CVE-2026-50551/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt